MDCAT Solved Past Paper 10 Sep 2023 PDF

Biology

Q. Protein present in haemoglobin has _______ structure.
Answer: Quaternary
Q. In competitive inhibition, the inhibitor
Answer: Competes with substrate
Q. The carbon atom carrying positive charge and attached to three other atoms or groups is called
Answer: Carbocation
Q. The homolytic fission of C-H bond in an alkane result in
Answer: Alkyl free radical
Q. Which of the following elements cannot be detected directly in a given organic compound?
Answer: Oxygen
Q. Pyridine belongs to which class of organic compounds?
Answer: Heterocyclic
Q. Potassium ferrocyanide is which type of salt
Answer: Complex
Q. Cu2+ salt solution is blue in colour due to transition of electrons from d to d orbital
Answer: d to d transition
Q. Third period element that initially reacts rapidly with oxygen to form a protective oxide coating that prevents further reactions is
Answer: Al
Q. Which of the following alkali metal forms only normal oxide with O2?
Answer: Li
Q. Electronegativity of Al is approximately equal to that of Be
Answer: True statement
Q. The electrode potential of the standard hydrogen electrode is chosen as
Answer: 0 V
Q. When 4 g of magnesium was heated in excess of oxygen. Calculate the theoretical yield of magnesium oxide (MgO).
Answer: 6.6g
Q. Which one of the following is a strong electrolyte in solution?
Answer: Potassium iodide
Q. ∆H can be measured indirectly by applying Hess’s law
Answer: Hess’s law
Q. One slice of bread with peanut butter contains energy
Answer: 201 kcal
Q. Which of the following is NOT true about viruses?
Answer: Can replicate on their own
Q. What directly triggers the activation of natural killer cells?
Answer: Interferons
Q. Canal system is a characteristic of
Answer: Porifera
Q. Shark belongs to class
Answer: Chondrichthyes
Q. Malpighian tubules are found in
Answer: Grasshopper
Q. Which is true for an X linked dominant trait?
Answer: All female offspring of affected father will be affected
Q. Carnivorous plants use digestion products for
Answer: Nitrites
Q. Genotype means
Answer: Genetic makeup inherited from parents
Q. Which blood group has anti-A and anti-B antibodies?
Answer: O
Q. What happens to calcium when skeletal muscles recover?
Answer: Pumped into sarcoplasmic reticulum
Q. Outer layer of muscle fibre is
Answer: Sarcoplasm
Q. Cells in lacunae of bone are
Answer: Osteocytes
Q. Gonorrhoea is spread through
Answer: Sexual contact
Q. Outer layer of uterus is
Answer: Perimetrium
Q. Corpus luteum is formed from
Answer: Graafian follicle
Q. Antibiotics can be used against
Answer: Salmonella typhi
Q. Example of passive immunity
Answer: Antibodies from mother’s milk
Q. In inflammatory response bradykinin causes
Answer: Leakage of fluid from blood vessels
Q. Embryological stages similarity seen in
Answer: Vertebrates
Q. Wings of birds and flying lizards show
Answer: Convergent evolution
Q. Reflex action does not involve
Answer: Brain
Q. Plasma membrane is selectively permeable due to
Answer: Proteins
Q. Lysosomes contain
Answer: Hydrolytic enzymes
Q. Motor neuron function
Answer: Carries impulse from CNS to muscles
Q. Viruses cannot
Answer: Excrete
Q. Flu virus genetic code is bound by
Answer: Lipid membrane
Q. HIV replication enzymes are located
Answer: Inside capsid
Q. Sickle cell anaemia is caused by
Answer: Single amino acid substitution
Q. Globular proteins incorrect statement
Answer: Abundantly found in hair

Chemistry

Q. Oxidation of secondary alcohols produces
Answer: Ketones
Q. Functional group of ketone is
Answer: Carbonyl
Q. SO3 yield increases by
Answer: Adding more SO2
Q. Alkyl halide dehalogenation uses
Answer: KOH (alcoholic)
Q. Percentage yield is used to check
Answer: Efficiency of reaction
Q. Distillation under reduced pressure is
Answer: Vacuum distillation
Q. Acetic acid can be prepared from
Answer: Methyl cyanide
Q. Formaldehyde is more reactive because
Answer: High nucleophilic addition tendency
Q. Alcohol + sodium gives
Answer: Alkoxide
Q. Highest boiling point alcohol
Answer: n-propyl alcohol
Q. Alkane homolytic fission produces
Answer: Free radicals
Q. Detection of oxygen in organic compound
Answer: Not directly detected
Q. pKb of n-propyl amine
Answer: 3.28
Q. Addition of HBr to isobutylene gives
Answer: tert-butyl bromide
Q. Pyridine is
Answer: Heterocyclic compound
Q. Potassium ferrocyanide is
Answer: Complex salt
Q. Cu2+ blue colour due to
Answer: d-d transition
Q. Protective oxide formation element
Answer: Al
Q. Li forms oxide type
Answer: Normal oxide
Q. Electronegativity comparison
Answer: Al ≈ Be
Q. Strong electrolyte
Answer: KI
Q. Lattice energy of KBr
Answer: 669.5
Q. Hess law used for
Answer: Enthalpy calculation
Q. Gas expansion work
Answer: -10 atm.dm³
Q. Ice melting ΔE
Answer: 6025.20 J
Q. First order rate calculation
Answer: 0.016 mol dm⁻³ s⁻¹
Q. KC unit
Answer: mol/dm³
Q. NH3 optimum temperature
Answer: 450°C
Q. Rate law (A and B)
Answer: k[A][B]²
Q. Metallic solid example
Answer: Cu
Q. Anisotropy means
Answer: Direction dependent property
Q. Forward reaction is
Answer: Left to right
Q. NaCl moles from HCl
Answer: 0.452 mol
Q. sp2 orbital unhybridized p orbital is
Answer: Perpendicular
Q. 760 torr equals
Answer: 101325 Pa
Q. CO2 from ZnCO3
Answer: 440 g
Q. Molar heat of vaporization
Answer: 40.7 kJ/mol
Q. NH3 structure
Answer: Pyramidal
Q. CaCO3 molar mass
Answer: 100 g
Q. Water valence electron pairs
Answer: 4
Q. Zr configuration
Answer: [Kr] 5s² 4d²
Q. Zeeman effect is
Answer: Splitting of spectral lines
Q. Yield calculation CuCO3
Answer: 86.87%
Q. 1p subshell
Answer: Does not exist
Q. 100% yield means
Answer: Actual = theoretical
Q. NaOH moles in 60g
Answer: 1.5 mol

 Physics

Q. Meticulous synonym
Answer: Both Conscientious and Precise
Q. Sequence 15, 14, 12, 9, ?
Answer: 5
Q. Photoelectric effect condition
Answer: Below threshold frequency → no effect
Q. Photon momentum
Answer: h/λ
Q. Lenz’s law relates to
Answer: Conservation of energy
Q. Induced current direction
Answer: Lenz’s law
Q. Solenoid magnetic field
Answer: Along axis
Q. Magnetic force formula
Answer: F = qv × B
Q. Electron in magnetic field force
Answer: Maximum when perpendicular
Q. Electron volt is unit of
Answer: Energy
Q. Maximum power transfer
Answer: Rload = Rsource
Q. Resistance relation bulbs
Answer: R1 is twice R2
Q. Temperature coefficient
Answer: Per degree rise
Q. I-V graph non-ohmic
Answer: Curved
Q. Capacitor dielectric removed
Answer: Electric field increases
Q. Capacitance change
Answer: Increases four times
Q. Coulomb potential at midpoint
Answer: Zero
Q. Coulomb law distance doubled
Answer: Force becomes 1/4
Q. Force reduced by 50% distance
Answer: Becomes 4 times
Q. Kinetic energy in gas heating
Answer: Increases
Q. Isothermal process
Answer: Temperature constant
Q. Adiabatic compression
Answer: Temperature increases
Q. Doppler effect (approaching siren)
Answer: Frequency increases
Q. Wave compression distance
Answer: 0.57 m
Q. Speed of sound independent of
Answer: Pressure
Q. Superposition principle
Answer: Sum of amplitudes
Q. Longitudinal waves
Answer: Oscillation parallel
Q. Polarization
Answer: Transverse waves
Q. Interference in phase
Answer: Constructive
Q. Centripetal force change
Answer: Half
Q. Artificial gravity
Answer: Centripetal force outward
Q. Angular displacement
Answer: Angle swept
Q. 3 revolutions in radians
Answer: 6π
Q. Escape velocity depends on
Answer: Mass of Earth
Q. Work done 10N, 5m
Answer: 50 J
Q. Work by weight
Answer: Zero
Q. Work maximum condition
Answer: θ = 0°
Q. Projectile motion components
Answer: Independent
Q. Collision energy conserved?
Answer: Kinetic energy not conserved
Q. Inertia definition
Answer: Resistance to change
Q. SI unit pair
Answer: Power – Watt
Q. Centripetal force in car
Answer: Friction
Q. Elasticity removed capacitor field
Answer: Increases
Q. Ball velocity components
Answer: 15 m/s horizontal, 20 m/s vertical down

English

Q. Synonym of Meticulous
Answer: Both Conscientious and Precise
Q. Error: chef sentence
Answer: Word order
Q. Error: enjoying reading writing
Answer: “to paint” incorrect
Q. He has been working ___ project
Answer: On
Q. Bus ___ the market
Answer: To
Q. Lets meet at Sarahs house
Answer: Let’s meet at Sarah’s house
Q. Teacher asked sentence
Answer: Correct punctuation with quotes
Q. She didn’t know about party
Answer: Correct sentence
Q. Father talking mobile
Answer: Correct tense sentence
Q. They were playing football
Answer: Correct
Q. Composed meaning
Answer: Calm
Q. Subtle meaning
Answer: Slight
Q. Elated synonym
Answer: Thrilled and Overjoyed

Logical Reasoning

Q. Missing term sequence 15,14,12,9
Answer: 5
Q. If a>b, b>c, d>a then
Answer: b < d
Q. Algorithm is to programmer as blueprint is to
Answer: Architect
Q. Regular exercise inference
Answer: Barriers include busy schedule
Q. Cause-effect Sara productivity
Answer: Construction work
Q. All omnivores syllogism
Answer: I and II
Q. Discount problem
Answer: Rs. 500
Q. Distance from house problem
Answer: 2 m

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